Three people suffered injuries in a dust explosion and fire at the CHS soybean processing plant in the southern Minnesota city of Fairmont.

Fire Chief Doug Borchardt tells KEYC-TV, an employee of CHS was treated for minor burns, and two firefighters trying to put out the resulting flames received minor injuries as well, one with steam burns, the other from heat exhaustion.

The extent of the damage was not immediately clear, but Borchardt says crews had to tear off equipment and parts of the building while they chased the blaze through the facility. He says crews were worried about the fire spreading into the extraction portion of the facility, which contains explosive hexane gas.